This Tyco mini relay runs a 12V coil and 70A contact so you can switch big loads without heavy wiring on the dash. The normally open contact on terminal 87 keeps the circuit off until the coil on terminals 85 and 86 sees 12V. The four pin layout matches common mini relay bases so you can drop it into existing 12V fuse blocks on tourers and work utes. The gear uses silver contacts rated to 70A to handle high draw gear in hot Aussie bays that nudge past 40°C. The built in resistor across the coil tames voltage spikes in modern 12V electronics. The removable metal bracket takes a single bolt into panels around 2–3 mm thick so you can mount it near batteries or distribution blocks. The compact mini footprint keeps your 12V setup tidy and a smart buy for future add ons.

• Tyco Electronics mini relay for 12V systems
• 70A current rating for high draw circuits
• Normally open contact arrangement on terminal 87
• Four flat pins labelled 30 85 86 87
• Resistor protected coil to manage voltage spikes
• Silver contacts for lower resistance and heating
• Continuous duty rating for long run accessories
• Compact mini housing suits tight fuse panels
• Removable metal mounting bracket included
• Suitable for automotive and general 12V switching applications

Q: Can this relay be used for continuous loads like fridge wiring or charge circuits?

Yes, this relay is rated for continuous duty at 12V. That rating means the coil and contacts are built to stay energised for long periods. It suits gear that may run for hours rather than short bursts. Just keep the total current at or below 70A. Correct cable size and fusing are still important for the rest of the circuit.

Q: What terminal numbers are used for the coil and for the load side?

Terminals 85 and 86 are the coil, 30 and 87 are the load. The coil takes the low current trigger feed on 85 and 86. The main supply cable usually lands on 30 and the accessory or load connects to 87. This layout follows standard mini relay pinouts so wiring diagrams are straightforward. Matching sockets labelled 30 85 86 87 will line up correctly.

Q: Is the contact normally open or normally closed when the relay is not powered?

The relay uses a normally open contact. With no power on the coil terminals 85 and 86 the circuit between 30 and 87 stays open. When 12V is applied to the coil the contact closes and links 30 to 87. This arrangement keeps high current loads off until the control circuit switches them on. Many automotive accessories use this style for reliability.

Q: How is the relay mounted in a vehicle or trailer setup?

The relay mounts using the removable metal bracket or a matching mini socket. The metal bracket has a single hole that suits a screw or bolt into bodywork or brackets. If you prefer socket mounting the four flat pins match common mini relay bases. Good mounting keeps vibration off the terminals. Solid fixing also helps with tidy cable routing in busy engine bays.